Rotary marking device for a continuously or intermittently fed web



1964 K. H. MARTENSSON ETAL 3,162,118

ROTARY MARKING DEVICE FOR CONTINUOUSLY 0R INTERMITTENTLY FED WEB FiledJan. 51, 1963 INVENTORS j@. L Hal vard Nariensson HaraLd. Georg Swed. e'

m JW 291mm 1 ATTORNEYS United States Patent 1:..

The present invention relates to a device for performing markingoperations, as for instance stamping or printing, on a continuously orintermittently fed material web running over a circular-cylindric rollor drum, whereby the distance between any two operations following insuccession in principle may be optionally pre-set.

When performing certain marking operations as for instance stamping,embossing or printing on a material web it is often necessary that thedistance between operations following in succession should be adjustableto enable the operations to be effected according to a programme made upbeforehand.

When performing marking operations with one known type of apparatus itis known the material web is fed forward between two rolls rotating inconcurrence, which are equipped with the tools necessary for performingthe marking operation. A device of this type is for instance a rotaryprinting press, where the paper web is printed when passing through apair of rolls. A disadvantage with these known devices is, however, thatthe operations are repeated regularly, wherefore the distances betweenthe processing points on the material web in the main will be equal,provided the tooled roll is not exchanged with a larger or a smallerone.

A device in accordance with the invention is therefore very advantageouswhen it is required that the marking should be applied on the materialweb at intervals independent of each other and is characterized thereinthat a revolving roll provided with the tools necessary for the requiredmarking operation is arranged to engage with the material web under thecontrol of a locking device which is released by means of a programmeattachment, in order to perform the mentioned operation when rollingagainst the material web, and to revolve into a position in which theroll is disengaged from the material web and where it again is locked bythe locking device in a disengaged position in relation to the materialweb.

In the following the invention is described with reference to theenclosed diagrammatical drawing, in which FIG. 1 illustrates the devicewith the marking roll in locked position,

FIG. 2 shows the device after the marking roll is released and isrotating clockwise by gravity into engagement with the material web,

FIG. 4 shows the position, where the marking roll 4 breaks itscontactwith the web 1.

In the FIGS. 1 to 4, which accordingly show the same device in differentoperations, a material web, for instance a paper web, is indicated byreference numeral 1.

, organs connected with the web drive,

Patented Dec. 22, 1964 11, by means of which stampings 12 in thematerial web is effected.

In FIG. 1 the device is shown with the marking roll 4 in a lockedposition. The material web 1 is earned upwards over the roll 2 rotatingin concurrence, whilst the roll 4 is not in engagement with the materialweb 1 and the roll 2 because of the fact that the flat part 6 of theroll 4 faces and is spaced from the material web 1. The roll 4 isretained in the locked position by the looking bar 8 operating againstthe locking pin 9.

When a marking operation is desired to be effected in the material web 1the lifting magnet 7 is charged with current from an impulse device, notshown here, which either may be guided by the movement of the materialweb or its driving machinery or by an entirely optional programme. Whenthe impulse is received electro-magnet 7 lifts the locking bar 8operating against the locking pin 9 with the effect that the staticallyunbalanced roll 4 is disengaged and by the eccentrically located weight10 is turned by gravity clockwise around its shaft 5 into the positionshown in FIG. 2. The bottom part of the flat section 6 of the roll 4 iscaused by the revolving action of the roll 4 to engage with the materialweb 1, whereafter this with its upwards action and through frictioncarries the roll 4 with itto give the roll a practically non-slidingrolling movement along the surface of the material web 1. When themarking roll 4 is rolled along the web 1, as shown in FIG. 3, thestamping tool 11, projecting from the surface of the roll 4, will beforced into the web 1 thereby effecting the stamping operation. Afterthe roll 4 has been turned approximately one revolution it will bein theposition, shown in FIG. 4. Here it is again disengaged from the materialweb 1 when the upper edge of the flat 6 breaks it contact with the web.Owing to the fact that the eccentric weight 10 exerts a turning force onthe roll 4 it will continue its clockwise rotation until the locking ping reaches the bar 8 now having again reached its locking position,whereafter the position shown in FIG. 1 is regained.

The material web 1, which through the operations has been provided withstamp indentations 12, continues its upwards movement, whereafter thedevice is ready to effect a new stamping operation.

As will be seen from the description the operation is not effected atthe same time as the impulse is communicated to the lifting magnet 7,and therefore it is necessary to take the distance into account by whichthe web 1 is fed forward between the moment of impulse and theperformance of operation. As this distance, however (disregarding theweb movement during the interval between the delivering of the impulseand the moment of contact between the roll and the web) largely is equalon all occasions and practically independent of the speed, in most casesthis point does not represent any difficulty.

With the device described herein it is thus possible to carry outmarking operations, for instance stamping, in the web-formed material 1in such a way that the stampings appear at certain intervals or incertain relation to a pattern already printed on the web. tione'd casethe marking roll 4 may for instance bereleased by an impulse attachmentwhich is guided by and in the latter case by a photo-cell attachment. Aspreviously pointed out it is even possible to guide the impulseattachment, which releases the marking roll, with an optional programme,whereby for instance a tape or something similar may be used to guidethe impulse attachment. v

With the device described herein it is even possible to vary thesideways position of the marking operation performed by means of movingthe rolls 2 and 4 sideways on the shafts- 3 and 5, respectively mean Inthe first men-' punched tape, magnetic (3 7 .As will be seen from theabove description, the device permits very wide possibilities ofvariations with regard to performance of the required operations as Wellastheir position in relation to;.the .rnaterial .web, wherefore thedevice has'pro ved' to'be very advantageous to r1153 especiallyjn cases,where differentimarking operations arevrequired to .be effected withvariable.distancesrbetwcen ,thernon a .niaterial ofdifiering width. i

We claim: v 1; In a imarking mechanism .for efiecting a markingoperation on a snrfacesuchasa web.moving ina substantially verticaldirection, the combination comprising an essentiallvcyiindricalmarkingmember, meansmount- ,ing .said cylindrical .marking member ,for,rotation about jitsaxis, ,amarking.nlmentlocatedcn,a first;portion of,the periphery .of said cylindrical imarking member, saidcylindricalmarkinglmemberbeing eceentrically Weighted ,to .one side ofsaid axis ,of ,rotation and tineludingt ardepressed second peripheralportion located :to the .opposite side ,of ,said axis of rotation and so;positioned when said eylindrical markingmemberroccqpiesianinitialiposi- ;tion, .as to testablishian initial icieara'nce betweenthe ;pe- Aripheryso'frsaid oy indrical; markingnfimbehand said movingsurfac e, locking ,means for iholding ,said cylindrical mafkingmcmberinsaidinitial position andmgainst-rotav010111.13iheiorce ofgravity whichwould otherwise occur due to its eccentrically Weighted characteristic,and means for releasing said locking .means thereby to permit an initialgravitational rotation of said cylindrical marking member and whichbrings said first peripheral portion intofrictional driving engagementwith'said moving surface whereby said markingtelement is thereaftercaused to rotate into position-adjacent said :moving surface andestablish a marking contact with .and move in :the same direction assaid -1noving -surface.

2. A marking mechanism as-defined in-clairn '1 wherein said lockingmeans is constituted bya .pin on said cylindrical marking mernber, alocking'bar cooperative with ,said pin,v and means for .rreleasing saidbar ,fiom said

1. IN A MARKING MECHANISM FOR EFFECTING A MARKING OPERATION ON A SURFACESUCH AS A WEB MOVING IN SUBSTANTIALLY VERTICAL DIRECTION, THECOMBINATION COMPRISING AN ESSENTIALLY CYLINDRICAL MARKING MEMBER, MEANSMOUNTING SAID CYLINDRICAL MARKING MEMBER FOR ROTATION ABOUT ITS AXIS, AMARKING ELEMENT LOCATED ON A FIRST PORTION OF THE PERIPHERY OF SAIDCYLINDRICAL MARKING MEMBER, SAID CYLINDRICAL MARKING MEMBER BEINGECCENTRICALLY WEIGHTED TO ONE SIDE OF SAID AXIS OF ROTATION ANDINCLUDING A DEPRESSED SECOND PERIPHERAL PORTION LOCATED TO THE OPPOSITESIDE OF SAID AXIS OF ROTATION AND SO POSITIONED WHEN SAID CYLINDRICALMARKING MEMBER OCCUPIES AN INITIAL POSITION, AS TO ESTABLISH AN INITIALCLEARANCE BETWEEN THE PERIPHERY OF SAID CYLINDRICAL MARKING MEMBER ANDSAID MOVE-